Quantum dynamics of a three-level trapped ion under a time-dependent interaction with laser beams Rasim Dermez, Bekir Deveci and Durdu Ö. Güney Eur. Phys. J. D, 67 6 (2013) 120 Published online: 25 June 2013 DOI: 10.1140/epjd/e2013-30649-9